Been there done that though I smoked mine with a 1 1/4 oz slug I reload @1500 fps. Same way, lowered front rest for different rifle and forgot to raise it for my slug gun.
Wish I could have chronographed my chronograph going down range being hit with that slug.!! Shattered beyond recognition. Impressive is weak description.
I called Pro Chrono and I told them I struck the chronograph, she said send it in for repair. Explained what happened. She never stopped laughing up to hanging up but I did get new one at nice price.